Washington climate

Washington Weather in August

NOAA 1991-2020 normals for Washington Is, 5.1 km from Washington

Average highs run from 77°F on August 1 to 73°F on August 31, and lows from 58°F to 55°F. Normal precipitation for the month is 3.02 in over about 9 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Washington, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
75°F
Average low
57°F
Precipitation
3.02 in
Record high
97°FAug 21, 1955
Record low
32°FAug 22, 1950
Chance of a freeze
0%
Daylight
14 h 43 min to 13 h 19 min
Cloud cover
62%
Humidity
80%
Dew point
60°F
Wind
9.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 177°F58°F91°F 195536°F 194729%0%
Aug 277°F58°F89°F 200744°F 197629%0%
Aug 376°F58°F91°F 198944°F 195229%0%
Aug 476°F58°F90°F 195538°F 197228%0%
Aug 576°F58°F88°F 197543°F 195028%0%
Aug 676°F58°F89°F 198945°F 202028%0%
Aug 776°F58°F89°F 200143°F 197629%0%
Aug 876°F58°F92°F 194945°F 197529%0%
Aug 976°F58°F92°F 194941°F 196429%0%
Aug 1076°F58°F87°F 194940°F 197229%0%
Aug 1176°F58°F85°F 200738°F 198229%0%
Aug 1276°F58°F87°F 200240°F 195029%0%
Aug 1376°F58°F85°F 197842°F 194629%0%
Aug 1476°F58°F91°F 196543°F 196429%0%
Aug 1576°F58°F89°F 201543°F 199229%0%
Aug 1676°F58°F87°F 195537°F 197629%0%
Aug 1776°F57°F87°F 196941°F 196230%0%
Aug 1875°F57°F92°F 195540°F 196330%0%
Aug 1975°F57°F95°F 195538°F 195030%0%
Aug 2075°F57°F94°F 195542°F 195630%0%
Aug 2175°F57°F97°F 195542°F 195030%0%
Aug 2275°F57°F90°F 197632°F 195030%0%
Aug 2375°F57°F91°F 194739°F 195130%0%
Aug 2475°F57°F87°F 194740°F 197131%0%
Aug 2574°F57°F88°F 194940°F 198431%0%
Aug 2674°F56°F87°F 194941°F 201731%0%
Aug 2774°F56°F88°F 197639°F 196831%0%
Aug 2874°F56°F92°F 195339°F 198231%0%
Aug 2974°F56°F89°F 194540°F 198631%0%
Aug 3073°F56°F88°F 196937°F 197431%0%
Aug 3173°F55°F84°F 196140°F 197031%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Washington, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 5:32 AM, sunset 8:15 PM
August 31
sunrise 6:08 AM, sunset 7:27 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00478905 (Washington Is), public domain. Records: NOAA GHCN-Daily, station USC00478905, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.